Section 15 BASE METALS AND ARTICLES OF BASE METAL 73 Articles of iron or steel 73 08 Structures (excluding prefabricated buildings of heading 94.06) and parts of str 73 08 10 73 08 10 00 Commodity Code Description 73 08 10 00 00 - Bridges and bridge-sections 73 08 20 00 00 - Towers and lattice masts 73 08 40 00 00 - Equipment for scaffolding, shuttering, propping or pitpropping